"Macabre" UK

Can anyone recommend some macabre/creepy sites or locations? This might sound a little vague, but I'm not sure how else to describe it. The catacombs in Paris, for example - places like that but in the UK. Thanks.

There are rumours about abandoned subwaystations throughout London... It's so secret there's even no tourist company offering them in their tours (or at least, I haven't heard of any). There was a story on those stations in a Dutch newspaper a few years ago. Most of them appear to be closed with brick walls at the platform side, the entrance blocked with new buildings. some of them are on long forgotten, no longer in use stretches of rail (several km's in London alone). Some of them are claimed to be in use as artists' ateliers, others still breath the air of a century ago, with posters for theatre shows and adds from the time they were abandoned...I never had the oppportunity to explore the truth behind this tales, but I'm very curious if they are true...

Anyone seen the recent brit film about Albert Pierrpoint. He was Englands last & prolific public hangman. Receiving the deeds to my house a few years back it showed he had owned the house during his " working" life!!!! No ghosts though.

Highgate Cemetery is wonderfully creepy. Karl Marx is buried there (his gravestone is huge), but the highlight is the layers upon layers of old graves that are hidden behind undergrowth. It feels like the cemetery is burying itself in.